1 files changed, 88 insertions, 0 deletions
diff --git a/devtools/server/tests/browser/browser_accessibility_simulator.js b/devtools/server/tests/browser/browser_accessibility_simulator.js
new file mode 100644
index 0000000000..47e3b898a3
--- /dev/null
+++ b/devtools/server/tests/browser/browser_accessibility_simulator.js
@@ -0,0 +1,88 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+const {
+  accessibility: {
+    SIMULATION_TYPE: { PROTANOPIA },
+  },
+} = require("resource://devtools/shared/constants.js");
+const {
+  simulation: {
+    COLOR_TRANSFORMATION_MATRICES: {
+      PROTANOPIA: PROTANOPIA_MATRIX,
+      NONE: DEFAULT_MATRIX,
+    },
+  },
+} = require("resource://devtools/server/actors/accessibility/constants.js");
+
+// Checks for the SimulatorActor
+
+async function setup() {
+  await SpecialPowers.spawn(gBrowser.selectedBrowser, [], () => {
+    content.window.testColorMatrix = function (actual, expected) {
+      for (const idx in actual) {
+        is(
+          actual[idx].toFixed(3),
+          expected[idx].toFixed(3),
+          "Color matrix value is set correctly."
+        );
+      }
+    };
+  });
+  SimpleTest.registerCleanupFunction(async function () {
+    await SpecialPowers.spawn(gBrowser.selectedBrowser, [], () => {
+      content.window.testColorMatrix = null;
+    });
+  });
+}
+
+async function testSimulate(simulator, matrix, type = null) {
+  const matrixApplied = await simulator.simulate({ types: type ? [type] : [] });
+  ok(matrixApplied, "Simulation color matrix is successfully applied.");
+
+  await SpecialPowers.spawn(
+    gBrowser.selectedBrowser,
+    [[type, matrix]],
+    ([simulationType, simulationMatrix]) => {
+      const { window } = content;
+      info(
+        `Test that color matrix is set to ${
+          simulationType || "default"
+        } simulation values.`
+      );
+      window.testColorMatrix(
+        window.docShell.getColorMatrix(),
+        simulationMatrix
+      );
+    }
+  );
+}
+
+add_task(async function () {
+  const { target, accessibility } = await initAccessibilityFrontsForUrl(
+    MAIN_DOMAIN + "doc_accessibility.html",
+    { enableByDefault: false }
+  );
+
+  const simulator = accessibility.simulatorFront;
+  if (!simulator) {
+    ok(false, "Missing simulator actor.");
+    return;
+  }
+
+  await setup();
+
+  info("Test that protanopia is successfully simulated.");
+  await testSimulate(simulator, PROTANOPIA_MATRIX, PROTANOPIA);
+
+  info(
+    "Test that simulations are successfully removed by setting default color matrix."
+  );
+  await testSimulate(simulator, DEFAULT_MATRIX);
+
+  await target.destroy();
+  gBrowser.removeCurrentTab();
+});